查询词典 sampling cell

Based on the Markov chain, the transitive law of the plastid in the splitting process of the cell in biology was first studied and then the pure composition probability of the cell was discussed in detail, including the deletion plastids and the transformation between the different states of the cell.

以随机过程为研究工具研究了生物学中质体随细胞分裂而传递的规律，通过数学建模对含突变质体的杂合细胞的纯合概率和细胞的不同状态之间的转移在生物学意义上进行了详细的讨论。

objective to observe the antitumor activities of different solution extracts of plumbago zeylanica l.in vitro.method mtt method was used to detect the inhibitory effects on four kinds of cancer cells.results chloroform extracts had significant inhibitory effects on the breast cancer cell(bre-04),the nerve cancer cell(n-04) and the lung cancer cell(lu-04),ic50 were 0.2699mg/ml and 0.2634mg/ml,0.4961mg/ml respectively.ic50 of chloroform extract on the hepg2 was 0.9379mg/ml.ic50 of petroleum ether extracts on bre-04,n-04,lu-04 and hepg2 was 0.5902mg/ml,0.5725mg/ml,0.7938mg/ml,0.6374mg/ml;ethyl acetate extracts had fairly inhibitory effects on the lu-04,ic50 was 0.7343mg/ml;n-butanol extracts and water-solubility extracts had notsignificant inhibitory effects on the four kinds of cancer cells.conclusion the antineoplastic effective parts of plumbago zeylanica l.were chloroform and petroleum ether extracts.

目的 探讨白花丹体外抗肿瘤作用的活性部位。方法 mtt染色法对白花丹五种溶剂提取物体外抗肿瘤活性进行了初步的研究。结果氯仿提取物对乳腺癌细胞（bre-04）、神经癌细胞（n-04）、肺癌细胞（lu-04）有较好的抑制生长作用，ic50分别为0.269 9 mg/ml、0.263 4 mg/ml、0.496 1 mg/ml，对肝癌细胞hepg2抑制作用差， ic50为0.937 9 mg/ml；白花丹石油醚提取部位对乳腺癌细胞（bre-04）、神经癌细胞（n-04）、肺癌细胞（lu-04）、肝癌细胞hepg2的ic50分别为0.590 2 mg/ml、0.572 5 mg/ml、0.793 8 mg/ml、0.637 4 mg/ml；乙酸乙酯提取物对肺癌细胞（lu-04）有一定的抑制作用，ic50为0.734 3 mg/ml；水溶性提取物以及正丁醇提取物无明显抑制肿瘤作用。结论白花丹氯仿提取部位、石油醚提取部位体外抗肿瘤作用较好，值得对其提取部位进一步分离纯化并研究其抗肿瘤作用机制。

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主要产品有：瑞士阿道夫科耐摇床、IBS细胞培养设备(细胞培养滚瓶机、细胞培养转瓶机、全自动培养基分装机、自动分装泵、火焰灭菌器、真空吸液仪、电转移液枪等等)）、TPP细胞培养器材、德国SYSTEC高压蒸汽灭菌器、意大利空气采样仪等。。。。。。

If the current cell is the topmost cell, SHIFT+ENTER selects the last cell in the previous column.

如果当前单元格是最上边的单元格，Shift+Enter 就会选择前一列的最后一个单元格。

Plant there exists large amount of cell wall egg white in cell wall middle, if structure egg white , zymoprotein etc., structure egg white having mainly expanding egg white , being rich in the glycine proteide and so on studying at present, brings the important effect into play in plant cell wall growth and structural adjustment.

植物细胞壁中存在大量的细胞壁蛋白，如结构蛋白、酶蛋白等，目前研究的结构蛋白主要有伸展蛋白、富含甘氨酸的蛋白质等，在植物细胞壁的生长和结构调整中发挥重要作用。

They may play important role in the proteolysis of the extracellular matrix, cell-cell and/or cell-matrix adhesion and membrane fusion.

二、ADAM19是本实验室克隆的新基因的编码蛋白，是一类锚定于细胞膜表面蛋白家族成员之一。

Methods: cationic liposome lipofectamine2000 was used to transfect retrovirus vector pbabe pten puro containing pten and pbabe puro into pten deficient prostate cancer cell line pc 3 respectively, and then cell growth, adhesion, segregation, apoptosis, cell cycle and ultrastructure alteration in vitro were studied.

利用阳离子脂质体lipofectamine 2000介导，分别将含pten的逆转录病毒载体pbabe pten puro及空载体pbabe puro转入pc 3细胞，观察转染前后细胞的生长、粘附、超微结构、细胞周期改变情况。

Objective To investigate cell cycle distribution of radiosensitive cell line SX-9 after X-ray irradiation and the relationship between radiosensitivity and cell cycle distribution.

通过对小鼠乳腺癌放射敏感细胞SX 9照射前、后细胞周期分布及其 p5 3基因状态等研究，初步探讨其放射敏感性与照射后细胞周期阻滞的关系。

At the same conditions, we found that 5-AzadC increased glial fibrillary acidic protein expression in U87MG cell suggesting that 5-AzadC induces cell redifferentiation, which was associated with decreased cell invasiveness.

GFAP的表现和MMP-2的表现呈相反的关系，5'-AzadC会引起细胞再分化的现象，接著会降低细胞的侵袭性。

Numerical results demonstrated that there are three kinds of the instability for the under-expanded supersonic jets according to their shock cell structure patterns:(1) the regular reflection shock cell with a single shear layer,(2) the Mach reflection shock cell with two shear layers and (3) the curved Mach stem with a relatively high expansion ratio.

计算结果表明欠膨胀超声速射流的失稳机制根据射流激波结构的特征可分为3种失稳模式：具有规则反射激波结构和单一剪切层特征的射流不稳定性；带有马赫反射激波结构和双剪切层特征的射流不稳定性；具有弯曲马赫杆和高度欠膨胀射流的不稳定性。

When this condition occurs, inbound replication with the source partner is stopped on the destination domain controller and event ID 2042 is logged in the Directory Services event log.

计算机密码学是研究计算机信息加密、解密及其变换的科学，是数学和计算机的交义学科，也是一门新兴的学科。

Instructions: click on the thumbnails to see a larger image, then use the left-right arrow keys to scroll through the slideshow.

使用说明：滑鼠点在小图上即可放大观赏。开启后键盘左右键可用来换照片。